Add QEMU to the release build for Docker [skip ci]

Author: adamtheturtle

.github/workflows/release.yml

@@ -84,6 +84,9 @@ jobs:
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
       - name: Build and push target manager Docker image
         uses: docker/[email protected]
         with: